Platform Descriptions
Issue 8.0 July 2002
3-9
Release 3.0.1-ADR software only. The LAA2/LAA2B DS3 (S4:4) circuit pack is
compatible with Release 3.0.1-ADR or later software. The STS1E circuit pack is
compatible with Release 4.0.0-ADR or later software.
■ LSSW IN and OUT: Two slots are provided for the LAA12B Low Speed Switch (LSSW)
circuit packs. The LSSW circuit packs are required when DS3 and STS1E low-speed
protection is desired. The LSSW circuit packs are not required if the LS INTFC slots
are equipped with OC3 (1.3 STD) and/or OC12 circuit packs.
■ TOHCTL: One slot is provided for the LAA26 Tributary - Overhead Controller
(TOHCTL) circuit pack. The TOHCTL circuit pack is required when an LS INTFC slot is
equipped with an OC3 circuit pack and single-ended operation is desired through the
OC-3 data communications channel (DCC). The TOHCTL circuit pack is compatible
with Release 6.0.0-ADR or later software.
■ TG 1 and 2: Two slots are provided for the LAA17 or LAA18 Timing Generator, Stratum
3 — DS1 (TG3 [DS1]) circuit packs. The LAA17 TG3 (DS1) circuit pack has been
discontinued and replaced with the LAA18 TG3 (DS1) circuit pack.
■ SYSCTL: One slot is provided for the LAA23B System Controller (SYSCTL) circuit
pack.
■ SYSMEM: One slot is provided for the LAA25 System Memory (SYSMEM) circuit pack.
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